Energy Cycle

Question 1

The ultimate source of energy (for most ecosystems) is the?

Answer 1

Sun

Question 2

____ and ____ are passed from organisms to organisms through the food chain to another

Answer 2

Energy and Nutrients

Question 3

____ remove the last energy from the remains of organism

Answer 3

Decomposers

Question 4

true or false:
inorganic nutrients are cycled, energy is not.

Answer 4

true

Question 5

define Food Chain

Answer 5

Every living organism/thing requires energy to survive, whether it be plants, animals or humans
▪ Energy is required by living beings to grow
▪ Plants get their energy from photosynthesis
▪ Animals get energy from the food they consume

Question 6

what is food chain?

Answer 6

is the sequence of who eats whom in a biological community (an ecosystem) to obtain nutrition. A food
chain shows how each living thing gets food, and how nutrients and energy are passed from creature to creature.

Question 7

Grazing Food Chain

Answer 7

a. Predatory Food Chain
b. Parasitic Food Chain

Question 8

begins with plants & proceeds from small to large animals. [e.g. Crops – Field Mice– Owls ]

Answer 8

Predatory Food Chain

Question 9

begins with plants and proceeds from large to small animals [ e.g. Producers –
Herbivores – Parasites]

Answer 9

Parasitic Food Chain

Question 9

Food Web

Answer 9

▪ In nature, food chain relationships are not isolated; rather they are complex, because one organism may form the
food source of many organisms. Thus, instead of a simple linear food chain, there is a web, like structure formed
by these interlinked food chains. Such interconnected matrix of food chains is called “Food Web”.
▪ Food webs are indispensable in ecosystems as they allow an organism to obtain its food from more than one type
of organism of the lower trophic level.
▪ Food chains are generally found to be interlinked and inter-woven as a network and are known as food web.
▪ Food web a system of interlocking and interdependent food chains in a given area.
▪ A Food Web is many food chains linked together to show a more accurate model of all possible feeding
relationships of organisms in an ecosystem.

Question 10

Trophic Levels

Answer 10

o Level 1: Producers (Autotrophs)
o Level 2: Primary Consumers (Herbivores)
o Level 3: Secondary Consumers (Carnivores/Omnivores)
o Level 4: Tertiary Consumers (Top Carnivores)